With the greatest of respect I don't understand why you are reluctant to get married when it offers your girlfriend and child the greatest security of you all being able to be together.We went to speak to an adviser yesterday and she told us that the rules are not set in stone. Every case is treated differently, they just want proof your legit and not scamming the system. If we move in together and open up a joint bank account and do what we can to help are case since we're having a baby (a very big commitment to each other) we have a good chance at getting an unmarried partner visa.
We are still considering getting married though but at least now we will know if we do, it will be because we want to and not that we have to.
Thank you all for your advice
While you say you would rather get married when you want to rather then when you have to, the situation has changed somewhat due to the pregnancy.
If you were thinking of getting married at some stage, your prospective child is just bringing this date forward.
I think its rather sad that you are thinking in these terms "have to get married" - if I was your girlfriend I would be very disappointed that you felt like this.